Building-block.



PATENTED NOV. 13, 1906.

INVENTOR Jzzmes 7V=flouylaaa Arromvm J'. A. DOUGLASS. BUILDING BLOCK.

JAMES A. oouoLAss, or ALLIANCE, omo.

' BUILDING-BLOCK.

Specification of Letters Patent.

Patented Nov. 13, 1906.

Application filed April 19,1906. B0ria1No.,256,846.

To all whom, it may concern.-

Be it known that I, J AMES A. DOUGLASS, a citizen of the United States,and a resident of Alliance, in the county of Stark and State of Ohio,have invented a new and useful Imrovenlent in Building-Blocks, of whichthe ollowing is a full, clear, and exact descrip tion. My inventionrelates to a building-block made of plastic material; and the rincipalobjects thereof are to provide a bloc of such construction that it canbe made in large sizes so as to take the place of a stone or severalbricks without unduly increasing the weight, and therefore making itossible to lay the blocks much more rapidly t ian bricks can be laid.

Further objects of the invention are to provide ventilation bothvertically and longitudinally; to provide separate inside and outsideair-spaces insulated from each other, so as to prevent radiation andsecure great warmth; to provide a plurality of air-spaces separated byincoinbustible walls, so as to secure thoroughly fireproof construction;to do away with studding and lathing, thus affording a great saving incost and adding to the fireproof nature of the walls; to do away withplastering for the purpose of saving labor, and to provide means bywhich door and window casings and the like can be readily applied to theblocks.

My invention also comprises the formation of a block with a face toimitate smooth pressed brick or rock, with penciled lines between therepresentations of the several parts thereof, and a furrowed rearsurface for a coat of finishing-plaster or a smooth rear surface for theapplication of calcimine.

-Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar characters of reference indicatecorresponding parts in all the figures.

Figure 1 is a perspective View of a building, block constructed inaccordance with the principle of my invention. Fig. 2 is a sectionalview of the same on the line '2 2 of Fig. 1, and Fig. 3 is a sectionalview on the line 3 3 of Fig. 1.

My building-block is preferably provided with a central longitudinalpartition (1, an outside wall I), and an inside wall 0. Although I haveshown three such walls, it will be understood that additional ones maybe added without departing from the spirit of my invention. These wallsdivide the block into compartments and afford continuous parallelair-passages 41, extending from the bottom to the top of the block.These passages are disconnected from each other on account of the imerforate partition 0,, and this affords a dea -air space on each side ofthe partition, thus adding to the warmth and insulating qualities of thewall.

It will be seen that when these blocks are placed one above another toform the wall these ventilating-passages will constitute portions ofpassages extending from the bottom of the buildin to the top and thatthe walls I) and c wil constitute, respectively, the outside and insidewalls of the building. Although the two passages d are separated fromeach other, they are respectively connected with the passages inadjacent blocks by means of perforations e in the end walls f of theblock. Perforations or grooves e are also provided on the upper andlower faces of the endv walls for a similar purpose. In each of the endwalls a vertical groove 9 is also preferably provided, this groove beingconnected with the rear groove 6 by means of inclined channels h. Therooves g are preferably semicylindrical, so t at when two blocks areplaced end to end a cylindrical vertical passage is provided betweenthem.

The rear wall c is preferably provided with a roughened face k for thereception of plaster; but when calcimine is to be apphed'a smooth faceis provided. The front wall I) is preferably provided with a face 1 inthe form of a representation of a portion of a ressedbrick wall thatis,showing a series 0 smooth brick faces in their natural size, withpenciling of a lighter or different color between them.

In the manufacture of the block it will be readily undertood that it canbe made in any desired size, according to the requirements of thebuilding; but I prefer to make it in such size that the front of theblock will represent the front faces of seven and one-half bricks. Inthe front wall also there are perforations m, similar to the erforationse. Both of these sets of perforations are ada ted to receive wooden plus 42. These woo ed plugs are preferably soa ed in oil before applicationand are inserted when Window and door casings are to be attached; Theyare also used for the purpose of securing an ornamental face of marble,glass, steel, or any other desired material. In applying the claim asnew and casings asbestos eper me be used-toe clude air and ran erthemproof.

Having thus described Petent-- 1. A building-block having a. pluralit.of

parallel longitudinal essages exten from top to bottcm of t e bl'ockfla'groove-in the end face of the block, and ennels connecting the saidgroove directly with theseid" am passa ee. n

2. A hollew' building-block having an end wall previded' withperforations or passages communicating-with the interior of the block,

a groove in the face of the endwall, and pessages for connectingsaidgroove with-the in tericr 0f the block.

my invention, I I desire to secure by Latina 351A- building-block h v ngtudmal ea om the tlop to thabottollln o the eadmg' omte-pass estotheends 0? the block whereby to conn t the pee- ,eages of abutt' groove inthe-end said'p'as'sa'ges, thegrooves coacting to form vertical I Intestnnony whereof- I i have name to this specification inthe dial loerten' block, an 2o a pluralitgggf blocks, and a. verticaltwqsubscribing-wi;

Witnesses:

'Bmmmm 1);

Emmi;

KINSEY.

does of the block between of abutting blocks 2 5 V Passage y presence ofJAMES A;

